A task of the post office staff is to()(class) mail according to the places it is to go.
投资者购买债券后,到债券期满为止的收益率,称为()。
A. 票面利率
B. 本期收益率
C. 持有期收益率
D. 到期收益率
When a person immigrates to another country, he should()(conscious) adapt himself to the new environment.